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Finding the Fourth Proportional to 238,143.65, 328,641.65 and 130,711.73

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Solution

The fourth proportional to 238,143.65, 328,641.65 and 130,711.73 is: 180,384.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,143.65 : 328,641.65 = 130,711.73 : x
  2. Step 2: Convert to fraction form
    238,143.65/328,641.65 = 130,711.73/x
  3. Step 3: Cross multiply
    238,143.65x = 328,641.65 × 130,711.73
  4. Step 4: Simplify right side
    238,143.65x = 42,957,317,968.00
  5. Step 5: Solve for x
    x = 42,957,317,968.00/238,143.65
  6. Step 6: Final answer
    x = 180,384.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.